54mm Outside Diameter x 31mm Inside Diameter. 8mm thick with a left-hand rotation.
Pro Tip: Espresso Parts offers valuable guidance on maintaining your grinder burrs, including when to replace them and how to go about changing your coffee burrs.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.